Tool holder



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A. B. SMITH Toor. nomma Filed Feb. 5'. 1923 CJi Patented Apr. l5, 1924.

.ALBERT B. SMITH, OF COUNCIL BLUFFS, IOVA, ASSIG-NO'R TO SPRAGUE FOUNDRY@a MANUFACTURING COMIBANY, OF COUNCIL BLUFES, OWA, A CORPORATION l I0WA.

TOOL HOLDER.

Application area February 5, 1923. serial no. 616,905.

To all 'zo/wm t may concer-it:

Be it known that I; ALBERT B. SMITH, a citizen of the United States,residing at Council Bluffs, in the county oit Pottawat tamie and Stateot' Iowa.; have invented certain new and useful Improvenients in ToolHolders; of which the following is a specification.

This invention relates to tool holders, and has t'or its object theproduction of a very powerful and effective tool holder to which thetool may be quickly clamped or unclamped and which may be used fory alarge variety of purposes, and particularly ior holding tools which arebeing used on machine tools or other machines.

Ot the accompanying drawings Fig. l is a plan view ot the tool holder,with the handle ot the tool in place7 which embodies features ot myinvention; Fig. 2 is a sectional view oi' the same along the line 2 2 ofFig. l; Fig. 3 is a rear elevation of the holder; and Fig. l is a sideelevat-ion of the frame of the holder.

The holder comprises two interlocking members, one being the frame orsupporting member 5 and the other the clamping member 6. The frame hasflanges 7 which are adapted to hold the tool holder in place, and italso has forwardly projecting anges S, through the central portions ofwhich are coaxial openings 9. Through the clamping member 6 is anopening l0 which; when the tool is in use; registers substantiallycoaXially with the openings 9 in the trame 5. Villien the tool is to beclamped in the holder the handle ll of the tool is passed thro-ugh theopenings 9 and l0. lVhen thus in position iianges l2 on the clampingmember are prevented, by shoulders 13 on the frame; from passingupwardly, and hence the member 6 can not be rotated on the tool handle;and by pressing downwardly on the rearwardly projecting flange 14 of theclamping member, by means of the screw l5 threaded into the frame. or inany other suitable manner; the handle may be very Vfirmly clamped by thetwo members so that anv movement of the handle; such as rotationthereof; is prevented. Vhen it is desired to release the handle it isnecessary only to unscrew slightly the screw 15 and the handle 11 maythen be pulled Out from the holes or rotated to any position which maybe desired.

In this manner a very powerful clamping effect is produced upon the toolholder handle by a very simple means; and the clamping is sulicient toprevent in all ordinary cases any rotations of the. handle, although itmay be round as shown. By means ot the round handle held in this mannerthe cutting edge, or other portions of the tool, may be very quickly andsensitively adapted or rotated to any desired angle or position and thenmay be instantly clamped iu that position. At the same time thelongitudinal position oi the tool handle; and hence ot the cutting edge,may be very quickly and sensitively positioned wherever desired; or botha longitudinal and a rotational movement may lie made simultaneously andexactly as desired without any inconvenience resulting due to theunclamping` or reclamping of the tool.

I claim as my invention:

l. A tool holder comprising two relatively movable members havingopposing surfaces, said members normally having substantially coaxialopenings through said suraces; said openings being adapted to receive.a. portion of a tool to be held; and means for relatively angularlymoving said members around an axis outside of the common axis of saidopenings.

2. A tool holder comprising a first member having a recess therein` asecond member having a portion normally positioned in said recess, saidfirst member having an opening through the wall of said recessr` andsaid second member lia-ving an. opening through the portion thercoiinormally in said recess, said two openings being normally coaxial andbeing adapted to receive a portion of a tool to be held, and means forangularly moving said two members relatively on a fulcrum eccentric tothe axis of said openings.

'3. A tool holder comprising a frame having two spaced opposing flangesthe adjacent surfaces thereof being substantially parallel, a clampingmember having a portion adapted to tit between said two surfaces, .saidframe having coaxial openings passing through said flanges7 and saidclamping member having an Vopening therethrough normally adapted toregisterwith said ange openings, said various openings being adapted toreceive a. portion of a tool to be held, and means for forcibly movingsaid (lll two members relatively angularly around an aXis eccentric withsaid registering openings. l

4l. A tool holder comprising` a frame having two spaced opposing flangesthe adjacent surfaces thereof being substantially parallel, a, clampingmember having a p0rtion adapted to lit between said two surfaces, saidframe having coaxial openings passing through said flanges, and saidclamping member having an opening therethrough normally adapted toregister with said ange openings, said various openings being adapted toreceive a portion of a tool to be held7 said opposing flanges havingshoulders thereon, and said clamping member having flanges projectingunder Said shoulders and thereby preventing relative rotating` of saidtwo members when said tool is in place, and means for producing apressure tending to rotate relatively said two members.

5. A tool holder comprising a frame having two spaced but opposingflanges, said flanges having shoulders thereon, and a clamping membernormally positioned between said .flanges, said two members havingregistering coaxial holes therethrough adapted to receive the handle ofa tool, said clamping member having lateral flanges projecting imdersaid shoulders and normally preventing relative rotation of saidmembers, said clamping member having another flange projecting underanother portion of said supporting member, and a screw threaded intosaid supporting member with the inner end normally pressing againstsai-d last mentioned flange. whereby said screw when screwed inwardljYtends to produce relative rotation of said two members and thus clampsthe handle of the tool firmly in said openings.

ln testimonj7 whereof, l hereunto set my hand.

ALBERT B. SMlTlL

